ST890_05 Datasheet, PDF (1/9 Pages) STMicroelectronics – 1.2A CURRENT LIMITED HIGH SIDE WITH THERMAL SHUTDOWN

ST890
1.2A CURRENT LIMITED HIGH SIDE WITH
THERMAL SHUTDOWN
I 2.7V TO 5.5V INPUT RANGE
I PROGRAMMABLE CURRENT LIMIT UP TO
1.2A
I LOW QUIESCENT CURRENT
I THERMAL SHUTDOWN
I FAULT INDICATOR OUTPUT
I 90mΩ (TYP.) ON RESISTANCE
I SO-8 PACKAGE
SO-8
DESCRIPTION
The ST890 is a low voltage, P-Channel MOSFET
power switch intended for high side load switching
applications.
This switch operates with inputs from 2.7V to
5.5V, making it ideal for both 3V and 5V systems.
Internal current limiting circuitry protects the input
supply against overload. Thermal overload
Table 1: Order Codes
protection limits power dissipation and junction
temperatures.
The ST890’s maximum current limits is 1.2A. The
current limit through the switch is programed with
a resistor from SET to ground. The ST890 is
available in SO-8 package. Main applications are:
PCMCIA slots, Access bus slots, Portable
equipment.
Type
ST890CD
ST890CDR
ST890BD
ST890BDR
Temperature
Range
0 to 70 °C
0 to 70 °C
-40 to 85 °C
-40 to 85 °C
Package
SO-8 (Tube)
SO-8 (Tape & Reel)
SO-8 (Tube)
SO-8 (Tape & Reel)
Comments
50parts per tube / 40tube per box
2500 parts per reel
50parts per tube / 40tube per box
2500 parts per reel
Figure 1: Schematic Diagram
July 2005
Rev. 4
1/9